Improvement in machines for making printersj leads



IINITED STATES PATENT OEEIoE.4

IsAAo soHoENBEEe; JE., or NEW YORK, N. Y.v

IMPROVEMENT IN MACHINES'FOR MAKING PRINTERS LEADS.

Specification forming part of Letters Patent No. 112,384. dated March 7, 1871.

I, IsAAc ScEoENBERG, Jr., of the city, county, and State of New York, have invented certain Improvements in Machines for Making Printers Leads, of which the following is a specication:

Nature and Object of the Invention.

VThe nature of my invention is theconstruction of a machine for making printers leads "of any desired width upon the same shaft or roller by adjustablecollars, which can be secured upon the `shaft by setscrews or keys,

or in any suitable manner, the only object being to secure them firmly in posit-ion.

Description ofthe Drawing,

Figure lis a cut-section through shaft B. Fig. 2 is an end view of the machine.- Fig. 3 is atop view; Fi g. 4, a cut-section of shaft c.

General Description.

lar or shoulder, which may be made upon the shaft B, and in relation to which the adjustable collars are regulated; H, the set-screw regulating collar D; J, the cap Whichholds collar D in place. K Kare gear-wheels attached :to shafts B and C, giving uniformity of motion; and L theV handle by which the machine may be operated 5 or it can be moved` by any suitable mechanism. l

ln operating my machine I put upon shaft C a collar of the width of leads I desire to produce, and adjust the collar D, by the setscrew H and cap J, to the collar put upon the shaft C, conduct the molten metal into the groove or recess between the collar E and shaft B, and put the machine in motion, and the metal is pressed or carried through the groove in a continuous strip of the desired width and thickness, which can be cut into y the lengths desired.

To prevent the machine from becoming heated, cold `waterfcan be passed through the shafts when made hollow for that purpose.

lar E, adjustablecollar D, cap J, andset-V screw H, substantially as described.

IsAAo soHoENBERG, JR.

Witnesses:

GEO. H. OoLLINs, J oHN'W. RIPLEY. 

